midiO 1.3
Your rating: Now say why...

(2) 4.5

AU plug-in adds MIDI output for GarageBand.   Free
Add to my Watch List
Email me when discounted
midiO is an AudioUnit plug-in for GarageBand adds a modicum of MIDI out support to GarageBand.
What's New
Version 1.3:
  • Passes AU validation under 10.6.
  • Can generate program and bank change messages.
  • Intel/PPC
  • Mac OS X 10.4 or later
  • GarageBand.

    Be the first to recommend a similar software title.
midiO User Discussion (Write a Review)
ver. 1.x:
Your rating: Now say why...

sort: smiles | time
midy commented on 25 Apr 2011
I cannot select anything from under the midi destination selection. It is stuck on 'None'. So of course I have no midi out. Anyone come across this problem?
[Version 1.3]

1 Reply

smartiperson replied on 24 Jun 2012
Had exactly the same problem using my old MacMini (PPC - 10.4). Managed to solve by using the previous version of MidiO 1.2, so search and download that instead (careful: some sites say 1.2 but then when you download its actually 1.3, check the Readme file to be sure). I found it here: http://midio.downloadaces.com/

Anonymous reviewed on 16 Feb 2005
Hmmm. I've installed it (or, rather, drag and droped it into the plugin/component folder. For some reason GarageBand will not show it in the dropdown menu inside track info. Have this problem with several (but far from all) of my AU plugins. Any clues, any one?
[Version 1.14]


Anonymous reviewed on 03 Sep 2004
Garage Band's sounds are great, but the parameter arrays for the synth modules are rather basic, and adjustments on the fly can't be automated. The lack of MIDI output is the biggest hinderance to any musician with existing MIDI equipment; this is the "missing link", as it were, without the expense of the oxymoronically named Logic.

(Oh, now I understand: its called "Logic Audio" because (a) it uses 1s and 0s, not because the user interface is sensible or intuitive; and (b) "Obtuse, Time Wasting Clap-Trap Audio" didn't appeal to the marketing depertment, even with "Platinum" tacked on the end)
[Version 1.14]

1 Reply

Anonymous commented on 28 Oct 2004
er... have you ever tried using Logic?
Perhaps ever tried reading the manual? Not the most simple but certainly one of the most intuitive programs I've ever used!

Midi AU plug-in? very nice, certainly the missing link, adds a very nice extra level of depth to Garageband that apple don't want you to have.... (think they'd rather you spend the cash on Logic express)
There are currently no troubleshooting comments. If you are experiencing a problem with this app, please post a comment.

Pupo rated on 15 Jul 2012

[Version 1.3]

Version Downloads:6,541
Type:Multimedia Design : Audio
Date:14 May 2010
Platform:PPC 32 / Intel 32 / OS X
Overall (Version 1.x):
Ease of Use:
Displaying 1-3 of 3
Displaying 1-1 of 1
Please login or create a new
MacUpdate Member account
to use this feature
Watch Lists are available to
MacUpdate Desktop Members
Upgrade Now
Install with MacUpdate Desktop.
Save time moving files & cleaning
up space wasting archives.
midiO is an AudioUnit plug-in for GarageBand adds a modicum of MIDI out support to GarageBand.

- -